Apparatus for applying and adjusting the pressure of top drawing-rollers.



PATENTED AUG. 16, 1904.

J. BARBOUR. APPARATUS FOR APPLYING AND ADJUSTING THE PRESSURE OF TOP DRAWING ROLLERS.

APPLICATION FILED APR. 28, 1904.

NO MODEL.

UNITED STATES Patented August 16, 1904.

PATENT OFFICE.

JAMES BARBOUR, OF BELFAST, IRELAND.

APPARATUS FOR APPLYING AND ADJUSTING THE PRESSURE OF TOP DRAWING-ROLLERS.

SPECIFICATION forming part of Letters Patent No. 767,788, dated. August 16, 1904. Application filed April 28, 190A. $eria1No. 205,375. (No model.)

To all whom, it nuty concern.-

Be it known that I, JAMEs BARBOUR, residing at Belfast, Ireland, have invented certain new and useful Improvements in Apparatus for Applying and Adjusting the Pressure on the Pressing-Rollers of Drawing, Roving, and

Spinning Frames; and I do hereby declare -rollers at one time and by one operation, or

the pressure can be applied independently to each series or set of pressing-rollers, and in either case when the pressure so applied has reached the required degree the attendant or operative is warned and the requisite pressure is not exceeded, or, if inadvertently exceeded, the connection is automatically broken and the pressure removed for the time being.

The invention consists of the ordinary spring-wire connected by a trigger or catch arrangement with a spring in such a manner that when the spring is extended to a certain point an alarm is sounded and the attendant warned. and if the pressure exceeds a certain limit the connection between the spring and the spring-wire is automatically broken. The pressure is adjusted by each spring being provided with a nut and bolt, and each nut may be in the form of a worm-wheel gearing into worms on a longitudinal shaft, so that a series of springs can be extended or contracted at one and the same time and operation. The longitudinal shaft is furnished with a squared end and key or hand-wheel and may also have combined with it an indicating-dial which indicates the amount of pressure applied to the presser-rollers.

Referring to the drawing which forms a part of this specification, the figure shows a side elevation, partly'in section, of the improved apparatus for purpose aforesaid.

According to this invention the spring 1 is supported in the framing 2 at one end by a bolt 3 passing through the framing 2 and capable of adjustment through the nut L. The other end of the spring is connected to a bar or link 5, on which is a catch 6 and a slightlyinclined lug or projection 7. The catch 6 engages with the lip 8 and receives the pull of the spring 1 except when it is borne by the spring wire or rod 9, which applies the pressure to the rollers 10 and 11. For this purpose the end of the spring-wire is cranked or formed with a slightly-inclined projection, as at 12, to engage with the lug 7. The cranked end of the spring-wire 9 has two steps 13 and 14:, and resting on the step 13 is the short arm 15 of the trigger 16, pivoted on the lug 17 of the framing 2.

The nut 4 may be either in the form of a Winged nut to turn by hand for putting the predetermined pressure on each spring separately, or the pressure of all the springs may be effected simultaneously by making each of the nuts 4 in the form of a worm-wheel, as shown in the drawing, and .causing same to gear with worms 18 on the shaft 19, which operates a pointer 20, through the gearing 21, to indicate the amount of pressure on the springs.

The action is as follows: In setting the pressure on the rollers by turning the nut 22 of the spring-wire 9, as usual, the lug on the end of the spring-wire separates the contact between the catch 6 and the lip 8, and the tension of the spring is on the rollers. Meanwhile the upper step 13 is now being drawn gradually from under the short arm 15 of the trigger l6, and as soon as the said arm slips off the step the spring-rod suddenly moves upward owing to the pressure put upon the inclined faces of the lugs 7 and 12 by the spring 1. The second step is then brought into sharp contact with-and rests upon the short arm 15 of the trigger 16, the sudden motion causing the spiral spring to give off a loud and distinct note of warning, so calling the attention of the attendant that the requisite pressure has been reached; but if the screwing up of the nut of the spring-wire be further continued the second step will pass from under the trigger, whereupon the connection between the lug 7 and the lug 12 will be separated and the pressure will be removed from the rollers, and the tension of the spring will again be received by the lip 8 on the framing 2.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, withaframe, pressingrollers supported thereby, and an adjustable pressing-wire operatively connected with the said rollers at one end and provided with an inclined projection at its free end; of a spring connected with the said frame at one end, a link connected to the other end of the said spring and provided with an inclined projection which engages with the aforesaid projection, and a trigger carried by the said frame and normally holding the said projections in engagement with each other. i

2. The combination, with a frame, pressingrollers supported thereby, and an adjustable pressing-wire operatively connected with the said rollers at one end and having at its free end an inclined projection and two steps; of a spring connected with the said frame at one end, a link connected to the other end of the said spring and provided with an inclined projeetion which engages with the aforesaid projection, and a trigger carried by the said frame and engaging with the said steps one after the other and normally holding the said projections in engagement with each other.

3. The combination, with a frame, pressingrollers supported thereby, and anadjnstable pressing-wire operatively connected with the said rollers at one end and provided with an inclined projection at its free end; of a spring, a retractable rod for connecting one end of the said spring with the said frame, adjusting mechanism for retracting the said rod, a link connected to the other end of the said spring and provided with a stop-catch for engaging with the said frame and having also an inclined projection for engaging with the aforesaid projection, and a trigger carried by the said frame and normally holding the said projections in engagement with each other.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES BARBOUR.

WVitnesses:

J NO. BRYSON, HENRY Soo'rT. 

